Add a character on each line of a string

Question

I make a CSV converter, for this, I need to replace all the spaces with \";\". I have already did this step. The problem is that I have a texbox with the multiline mod. Here is

Answer 1

content1 = string.Concat( content1.Replace(" ", ";"), ";");

Remove all spaces then concat ";" at end

Answer 2

char []split = new char[]{' '};

//replaces all " " with ";", contiguous "    " will be replaced with a single ";"
var c2 = String.Join(";", content1.Split(split, StringSplitOptions.RemoveEmptyEntries)); 

//replaces all newlines with a semicolon followed by a newline, thus appends a semicolon to the end of line. 
var c3 = c2.Replace(System.Environment.NewLine, ";"+System.Environment.NewLine);

//If the file did not end with an NewLine, append a semicolon to the last line
if (!c3.EndsWith(System.Environment.NewLine)) c3+=";";

File.WriteAllText(path, c3);

It's not the fastest solution, but it works.

Answer 3

content1 seems to contain the whole file.

So if you want to add semicolons to each line, you could replace the newline with a semicolon and a newline.

content1 = content1.Replace("\n", ";\n");

---

You can make your code a bit easier:

string nom = tbxNom.Text;
#region Normal
try
{
    string content1 = tbxArret.Text;
    string path1 = @"C:\Users\DanyWin\Desktop\CsvOutput\" + nom + ".csv";
    var lines = content1.Split(new[] { Environment.NewLine }, StringSplitOptions.RemoveEmptyEntries)
                .Select(line => Regex.Replace(line, @"\s+", ";") + ";");
    content1 = String.Join("\n", lines);
    File.WriteAllText(path1, content1);
}
catch
{
    lblInfo.Text = "Erreur";
}